:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #3b82f6;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --star: #fbbf24;
    --font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --container-max: 1280px;
}

/* Base Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body { 
    font-family: var(--font-family); 
    background-color: var(--surface); 
    color: var(--text-primary); 
    line-height: 1.6; 
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
button, input, select, textarea { font-family: inherit; font-size: inherit; }

/* Layout */
.container { 
    width: 100%;
    max-width: var(--container-max); 
    margin: 0 auto; 
    padding: 0 2rem; 
}

/* Navbar Improvement */
.navbar { 
    position: sticky; 
    top: 0; 
    z-index: 1000; 
    background: rgba(255, 255, 255, 0.8); 
    backdrop-filter: blur(12px); 
    border-bottom: 1px solid var(--border-color); 
    transition: var(--transition); 
}
.nav-container { 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    height: 80px;
}
.logo { 
    display: flex; 
    align-items: center; 
    gap: 0.75rem; 
    font-size: 1.5rem; 
    font-weight: 800; 
    color: var(--primary); 
    flex-shrink: 0;
}
.logo-icon { font-size: 2rem; font-variation-settings: 'FILL' 1; }
.nav-links { 
    display: flex; 
    gap: 2.5rem; 
    margin: 0 2rem;
}
.nav-links a { 
    font-weight: 600; 
    color: var(--text-secondary); 
    white-space: nowrap;
}
.nav-links a:hover { color: var(--primary); }
.nav-actions { 
    display: flex; 
    align-items: center; 
    gap: 1.5rem; 
    flex-shrink: 0;
}
.btn-text { color: var(--text-secondary); font-weight: 600; padding: 0.5rem 1rem; border-radius: var(--radius-md); }
.btn-text:hover { background: var(--background); color: var(--primary); }
.btn-primary { 
    background: var(--primary); 
    color: white; 
    padding: 0.75rem 1.5rem; 
    border-radius: var(--radius-lg); 
    font-weight: 700; 
    border: none; 
    cursor: pointer;
    white-space: nowrap;
}
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-md); }

/* --- Hero Section & Search UI --- */
.hero { 
    display: grid; 
    grid-template-columns: 1.1fr 0.9fr; 
    gap: 5rem; 
    padding: 8rem 0; 
    align-items: center; 
}
.hero-content { position: relative; z-index: 5; }
.hero-title { 
    font-size: clamp(2.5rem, 5vw, 4rem); 
    font-weight: 900; 
    line-height: 1.1; 
    margin-bottom: 2rem; 
    letter-spacing: -0.04em; 
    color: var(--text-primary); 
}
.highlight { 
    color: var(--primary); 
    position: relative;
    display: inline-block;
}
.highlight::after {
    content: "";
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 15px;
    background: rgba(37, 99, 235, 0.1);
    z-index: -1;
}
.hero-subtitle { 
    font-size: clamp(1.1rem, 1.5vw, 1.25rem); 
    color: var(--text-secondary); 
    margin-bottom: 3.5rem; 
    line-height: 1.7; 
    max-width: 550px; 
}

.search-area-wrapper { width: 100%; max-width: 600px; }
.search-bar-container { 
    background: white; 
    border: 2px solid var(--border-color); 
    border-radius: 24px; 
    padding: 0.5rem 0.5rem 0.5rem 1.5rem; 
    box-shadow: var(--shadow-xl); 
    display: flex; 
    align-items: center; 
    gap: 1rem; 
    margin-bottom: 2.5rem; 
    transition: var(--transition); 
}
.search-bar-container:focus-within { 
    border-color: var(--primary); 
    box-shadow: 0 0 0 5px rgba(37, 99, 235, 0.1), var(--shadow-xl); 
    transform: translateY(-3px); 
}
.search-form { display: flex; align-items: center; width: 100%; gap: 1rem; }
.search-input { 
    flex: 1; 
    border: none; 
    outline: none; 
    font-size: 1.15rem; 
    font-weight: 500;
    width: 100%;
}
.btn-search { 
    background: var(--primary); 
    color: white; 
    padding: 1rem 2.5rem; 
    border-radius: 18px; 
    border: none; 
    font-weight: 800; 
    cursor: pointer;
}

/* Popular Keywords */
.popular-searches { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.popular-label { 
    font-size: 0.95rem; 
    font-weight: 800; 
    color: var(--text-primary); 
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.tag-group { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.tag { 
    font-size: 0.9rem; 
    padding: 0.6rem 1.2rem; 
    background: var(--background); 
    color: var(--text-secondary); 
    border: 1px solid var(--border-color); 
    border-radius: var(--radius-full); 
    font-weight: 600;
}
.tag:hover { 
    background: var(--primary); 
    color: white; 
    border-color: var(--primary); 
    transform: translateY(-4px); 
    box-shadow: var(--shadow-md); 
}

/* --- Hero Image & Floating Badges --- */
.hero-image-container { position: relative; width: 100%; }
.hero-image { 
    width: 100%; 
    border-radius: 40px; 
    box-shadow: var(--shadow-xl); 
    object-fit: cover;
    aspect-ratio: 1/1;
}
.floating-badge { 
    position: absolute; 
    background: white; 
    padding: 1.25rem 1.5rem; 
    border-radius: 24px; 
    box-shadow: var(--shadow-xl); 
    display: flex; 
    align-items: center; 
    gap: 1.25rem; 
    animation: float 6s ease-in-out infinite; 
    z-index: 10; 
    border: 1px solid var(--border-color);
    min-width: 200px;
}
.badge-1 { top: 10%; left: -10%; }
.badge-2 { bottom: 10%; right: -10%; animation-delay: 3s; }
.badge-icon { 
    width: 50px; 
    height: 50px; 
    border-radius: 16px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    background: #fef08a; 
    color: #ca8a04; 
    font-size: 1.75rem; 
}
.badge-2 .badge-icon { background: #dcfce7; color: #16a34a; }
.badge-text strong { display: block; font-size: 1.25rem; font-weight: 900; line-height: 1.2; }
.badge-text span { font-size: 0.85rem; color: var(--text-secondary); font-weight: 600; }

@keyframes float { 
    0%, 100% { transform: translateY(0); } 
    50% { transform: translateY(-25px); } 
}

/* Sections */
section { padding: 8rem 0; }
.section-header { margin-bottom: 4.5rem; }
.section-title { 
    font-size: clamp(2rem, 3vw, 2.75rem); 
    font-weight: 900; 
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}
.section-subtitle { font-size: 1.15rem; color: var(--text-secondary); }

/* Categories Grid */
.category-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); 
    gap: 2rem; 
}
.category-card { 
    padding: 2.5rem 1.5rem; 
    background: white; 
    border: 1px solid var(--border-color); 
    border-radius: 32px; 
    transition: var(--transition); 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    gap: 1rem; 
}
.category-card:hover { 
    transform: translateY(-12px); 
    box-shadow: var(--shadow-xl); 
    border-color: var(--primary); 
}
.category-icon { 
    width: 70px; 
    height: 70px; 
    border-radius: 22px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    font-size: 2.25rem; 
}
.category-name { font-weight: 800; font-size: 1.15rem; }

/* Expert Grid */
.expert-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); 
    gap: 2.5rem; 
}

/* How It Works Improvement */
.steps-container { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: 3rem; 
    margin-top: 5rem; 
}
.step-card { 
    background: white; 
    padding: 4rem 2.5rem; 
    border-radius: 32px; 
    text-align: center; 
    border: 1px solid var(--border-color); 
    transition: var(--transition);
}
.step-card:hover { transform: translateY(-10px); border-color: var(--primary); box-shadow: var(--shadow-xl); }
.step-icon-wrapper { 
    width: 100px; 
    height: 100px; 
    background: var(--background); 
    color: var(--primary); 
    border-radius: 30px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    margin: 0 auto 2.5rem; 
}
.step-card h3 { font-size: 1.5rem; font-weight: 800; margin-bottom: 1.25rem; }

/* Footer */
.footer { background: #0f172a; color: white; padding: 6rem 0 4rem; }
.footer-content { 
    display: grid; 
    grid-template-columns: 1fr 2fr; 
    gap: 8rem; 
    margin-bottom: 5rem; 
}
.footer-brand .logo { color: white; margin-bottom: 1.5rem; }
.footer-desc { color: #94a3b8; line-height: 1.8; font-size: 1rem; max-width: 350px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3rem; }
.link-column h4 { font-size: 1.1rem; font-weight: 800; margin-bottom: 2rem; color: white; }
.link-column a { color: #94a3b8; display: block; margin-bottom: 1rem; }
.link-column a:hover { color: white; transform: translateX(5px); }
.footer-bottom { 
    border-top: 1px solid #1e293b; 
    padding-top: 3rem; 
    text-align: center; 
    color: #64748b; 
    font-size: 0.95rem; 
}

/* PC Specific Ratio Fixes & Media Queries */
@media (max-width: 1400px) {
    .container { max-width: 1140px; }
    .hero { gap: 3rem; }
    .badge-1 { left: -5%; }
    .badge-2 { right: -5%; }
}

@media (max-width: 1200px) {
    .hero-title { font-size: 3.25rem; }
    .nav-links { gap: 1.5rem; }
    .footer-content { gap: 4rem; }
}

@media (max-width: 1024px) {
    .hero { 
        grid-template-columns: 1fr; 
        text-align: center; 
        padding: 6rem 0; 
        gap: 4rem;
    }
    .hero-content { display: flex; flex-direction: column; align-items: center; }
    .hero-subtitle { margin: 0 auto 3rem; }
    .search-area-wrapper { margin: 0 auto; }
    .popular-searches { justify-content: center; }
    .hero-image-container { max-width: 600px; margin: 0 auto; }
    .floating-badge { display: none; }
    .steps-container { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; gap: 4rem; }
}

@media (max-width: 768px) {
    .container { padding: 0 1.5rem; }
    .navbar { height: auto; padding: 1rem 0; }
    .nav-links { display: none; }
    .hero-title { font-size: 2.5rem; }
    .nav-container { height: auto; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .section-title { font-size: 1.75rem; }
}